In smb3_init_transform_rq(), 'orig_len' was only counting the request
length, but forgot to also include the number of bytes of the data being
written.
That said, writing or creating files with the 'seal' mount point was
broken.
Signed-off-by: Paulo Alcantara <palcantara@xxxxxxx>
---
fs/cifs/smb2ops.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index badcfb2f3c22..ea198134fb48 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -2502,6 +2502,14 @@ smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
for (i = 0; i < old_rq->rq_nvec; i++)
orig_len += old_rq->rq_iov[i].iov_len;
+ if (old_rq->rq_npages) {
+ orig_len += old_rq->rq_tailsz;
+ } else {
+ orig_len += old_rq->rq_pagesz * (old_rq->rq_npages - 1) -
+ old_rq->rq_offset;
+ orig_len += old_rq->rq_tailsz;
+ }
+
for (i = 0; i < npages; i++) {
pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
if (!pages[i])
--
2.17.1
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